91
Reference Manual
00809-0100-2460, Rev DE
Operation
October 2018
Operation
5.3.1 Start-up procedure
When the system hub is starting up, the LEDs are lit up and turned off in a certain order to indicate
proper operation. In case an error is detected during the start-up procedure the red LED remains turned
on.
Start-up:
1. All LEDs are turned on
2. Within 0.5 seconds the yellow (Status) LED is turned off.
3. When the start-up procedure is finished, the red (error) LED is turned off.
In case an error is detected during the start-up procedure, the error LED will start blinking according
to the appropriate error code as described in “Error LED” on page 92.
4. The green (power) LED remains lit when the system hub is powered on.
5.3.2 Runtime operation
After the start-up procedure is finished the system hub enters runtime mode.
The red Error LED will be turned off. If an error occurs, the LED will start to blink as described in “Error
LED” on page 92.
In runtime mode the yellow status LED will blink at a rate given by the current operational mode as
shown in Table 5-3 on page 94.
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